Music-leaf turner



April 26 1927. 1,625,898

C. L. KNAPP MUSIC LEAF TIJJRNER Filed April 6, 1926 2 Sheets-$heet l Aprll 26 9 C, L. KNAPP musxc LEAF TURNER Filed April 6, 1926 2 Sheets-Sheet Inventor Attorney Patented Apr. 26, 1927.

CHARLES Ii. KNAPP, F SHENANDOAHI, PENNSYLVANIA.

MUSIC-LEAF wanna.

Application filed April 6,

My present invention pertains to music leaf turners, and contemplates the provision of a music leaf turner that is reliable in operation and is adapted to promptly bring about the turning of a leaf following slight pressure on a finger piece.

With the foregoing in mind, the invention in all of its details will be fully understood from the following description and claims when the same are read in connection with the drawings, accompanying and forum ing part of this specification, in which Figure 1 is an elevation, partly in section, of the music leaf turner constituting the best practical embodiment of my invention of which I am cognizant.

Figure 2 is an enlarged fragmentary horizontal section taken in the plane indicated by the line 2-2 of Figure 1, looking upwardly.

Figure 3 is an enlarged fragmentary section taken in the plane indicated by the line 3-3 of Figure 1, looking toward the left.

Figure 4 is an enlarged vertical section taken in the plane indicated by the line 44 of Figure 3, looking toward the right.

Figure 5 is aperspective of the lowermost swingable member comprised in my improvement.

Similar numerals of reference designate corresponding parts in all of the views of the drawings.

Shown in Figures 1 and 2 is a bar 1, equipped at its ends with appurtenances of appropriate description, whereby the said bar may be attached to a piano, organ, music stand or any other desired support.

Appropriately fixed with respect to the bar 1 is a casing 3, and guided and movable rectilinearly in one wall of the said casing is a rod 4 having a finger piece 5 at its outer end. The rod 4 is pivotally con nected at 6 to a keeper 7, having a beveled toe 8, Figure 2, the said keeper 7 and the inner portion of the rod 4 being arranged between fixed bracket members 9 in the ing 3, Figure 4. and the said keeper 7 having lateral projections 10, disposed. and movable in slots 11 in the said brackets 9. A spring strip 12 is fixed at 13 in and to the casing 3 and the free portion of said spring strip 12 extends and is adapted to play between the bracket members 9 and is disposed against and back of the keeper 7 as made clear in Figures 2 and 4. It will also be understood from Figure 2 that an expansion spring 14 1826. Serial No. 100,128,

is interposed between an abutment 15 on the rod 4 and a washer or other suitable abutment 16 arranged against the edges of the bracket members 9, the said spring 14 being designed to return the rod 4 to and retain said rod 4 yieldingly in the normal position shown in Figure 2, and inthis connection it will be understod that the return of the rod 4 to the normal position shown in Figure 2 will be attended by the return of the keeper 7 to its normal position also shown in Figure 2. lVhen the rod 4 is moved inwardly or in the direction of the adjacent arrow in Figure 2, the keeper 7 will be rocked against the spring strip 12 and will be moved inwardly until its projections 10 bring up against the inner end of the slots 11, whereupon the keeper 7 will be swung in the direction indicated by the arrow thereon in Figure 2, and, as before stated, the release of the finger piece 5 will beattended by the immediate return of the keeper 7 to the normal position shown in Figure 2.

The casing 3 is also provided with an in terior fixed stop 20 and an interior and fixed bracket 21, the said bracket 21 being provided with a plurality of apertures 22 as appears in Figure 3. Hooked in the apertures 22 of the bracket 21 or otherwise suit ably connected to the said bracket 21 are spring strips 23 which are arranged one above the other in spaced relation as shown in Figures 3 and 4. a

Journaled in appropriate hearings in the lower and upper walls of the casing 3 is an upright shaft 24, and surrounding and movable independently of the shait24 and of each other is an inner sleeve 25 and an outer sleeve 26, the inner sleeve 25 terminating at its lower end at an intermediate point between the lower and upper walls of the casing 3, and the outer sleeve 26 teri'ninating at its lower end at a higher point in the casing 3 and between the lower and upper walls of the casing.

Each of the elements 24, 25 and 26 is provided at its upper end with an arm, and each arm is equipped with a clip of appropriate construction designed to take hold oi the upper edge portion of a leaf of music. The said arm of the shaft 24 is numbered 24 and its clip is numbered 24", and the arm of the inner sleeve 25 is numbered 25 and the clip on said arm is numbered 25 and the arm on the outer sleeve 26 is numbered 26 the clip carried by the said arm 26 being disposed back of the clip B l in Figure 1 and therefore not shown.

Disposed and movable swingably in the casing 3 is the swingable element St coinplementary to the shaft 24. By comparison of Figures 1 and 5 the said swiug'able ele ment 34 will be understood as comprising a lower dish-like portion 36, a sleeve 37, and an upper plate 38, the sleeve 37, dish 36 and plate 38 being fixed together, and the sleeve 37 being splined or keyed or otherwise ap propriately fixed to the shaft Q l so that the element 3% and the shaft B l will turn in concert. It will also be understood that the plate 38 is provided with an abutment S9 to bring up against the stop 21), and is also provided with a pendent arm 40 for cooperation with the toe 8 of the keeper 7, and it will further be noted that the said pendent portion 40 is provided with a lateral projection all, Fin'ures 3 and 5, for a purpose hereinafter set forth. Superposed upon the plate 38 of the swing: bleeleinent 3t and fixed to the inner sleeve 25 is a swineable member which is generally similar to the swingable element 34: with the exception that its pendent port-ion 40 Figure l. is longer than the pendent portion at) so as to reach down to the horizontal plane of the keeper 7, and also with the exception that its pendent portion 10, Figures 2 and l, is not provided with any projection like the projection 41 of the element 34.

The swingalole element of the outer sleeve 26 is fixed to said sleeve .26 and is generally similar in construction to the swingable element 34 except that its pendent portion 40* is sufficiently long; to reach down to the horizontal plane of the keeper 7. and

also with the exception that the said pendent portion 10* is provided with a lateral pro jection 41 reversely arranged to the project-ion e1. as clearly appears in Figure 2.

Manifestly when the several arms of the elements 2-1, 25 and 26 are-arranged asshown in Figure 1, the swing'able elements 3%, l5 and 55 will be relatively arranged as shown in Figure 2, and the toe 8 of the keeper 7 will rest in position to hold the anember 55 against movement in the direction indicated by the series of arrows atthe left of Figure 2. and the projections l1 and 41 will. oper ate to maintain the pendent portions of the three swingable elements in spaced relation, At this point I would have it understood that there is one of the springs 3 to each of the three swingable elements described, the endsof the springs 23 remote from the bracket 21 being connected in appropriate manner to the swingable elements so that following the release of. each swingable ele ment from the keeper 7. the spring of said element will promptly swing the element until the same brings up against the stop 20. Incident to the said swinging movement of each eleincntthe shaft 2-1, the inner sleeve or the outer sleeve 26, as the case may be, will be swung from the position shown in Figure :l, forwardly and toward the left so as to adequately turn a leaf of music.

The parts of my improved device are shown in corrcspcatiling positions in l igures 1 and 2, and from this it follows that the initial inward inovci'nent of the rod 4; will be attended by the release of the swing'ablc member 55 complementary to the outer sleeve :26 whereupon the leaf connected with the sleeve 26 will be turned, and manifestly following the release of the swingable element 55, and the release of the rod l. the toe 8 of the keeper 7 will snap into position to constitute an abutmentfor the pendent portion of the sw igable element to so as to hold the inner sleeve 25 against turning. lVllGlL however. "the .rod 4 is moved inwardly, the second time, the pendent portion of the swingable element 4:5 will be released from the toe S of the keeper 7, and when said rod 4; is released. the keeper 7 will as same a position to enable its too 8 to offer an abutment .to the pendent portion of the swino'able element and thereby preclude turning; of the outer sleeve 26 until the third inward movement of the rod 4, whereupon the third leaf of music will be turned. The several sweeps or arms carrying the devices for engaging leaves .of .lllllSlC are designed to be returned to the position shown in l iggure 1 by hand, and when the said sweeps or arms are so returned, the pendent portions of the swingable elements will, by virtue of the beveled toe 8, ride past .the said keeper 7 and assume the positions shown in Figure 2.

It will be apparent from the foregoing that my novel device is reliable inoperation and is well adapted, in general, to withstand the usage to which music leaf turners are ordinarily subjected; and it will also be noted that my novel device {is compact, and that when nickel plated or otherwise embellished the device will becalculated to enhance rather than detract from the finished appearanceof a piano, organ or the like.

lVhile I prefer the construction and relative arrangement ofthe elements of my improvement as disclosed herein, I do not desire to be understood as limiting myself to the precise construction and relativearrangement of the parts in the disclosure, my invention being defined by my appended claims within the scope of which modifications may be made without departure from my invention.

Having described my invention, What I claim and desire to secure by Letters-Patent, 1s:

1. A music leaf turner comprising a casing, a shaft, and inner and outer sleeves surill) rounding said shaft and all journaled in and extending from the casing, sweeps carried by the shaft and the inner and outer sleeves and equipped with means for the connection with the same 01' leaves of music, superposed swingable devices disposed. in the casing and fixed to the shaft, the inner sleeve and the outer sleeve, respectively, said swingable devices having lower disc-like portions, upper plates and means connecting the disc-like portion and upper plate and also having pendent portions of different lengths on said plates and the said pendent portions being arranged to normally rest in spaced relation and two pendent portions being provided with reversely arranged projections disposed toward the other pendent portion, springs for moving the said swingable devices, a stop for limiting the movement of said devices under the action of their springs, and a manually controlled spring influenced keeper having a beveled toe to engage the pendent portions of the swingable devices.

2. A music leaf turner comprising an attaching bar, a casing fixed on said bar, a shaft, and inner and outer sleeves surrounding said shaft and all jonrnaled in and extending from the casing, sweeps carried by the shaft and the inner and outer sleeves and equipped with means for the connection or the same to leaves of music, swingable devices disposed in the casing and fixed t0 the shaft, the inner sleeve and the outer sleeve,

respectively, said sw'ingable devices being superposed and having pendent portions of difleront lengths and the said pendent portions being adapted to normally rest in spaced relation and two pendent portions being provided with reverse-1y arranged projertions disposed toward the other pendent portion, springs for moving the said swingable devices, a stop in the casing for limiting the movement of said devices under the action of their springs, a bracket fixed in the casing and having a slot, a spring strip connected to the casing and disposed alongside said bracket, a keeper having a beveled toe to engage the pendent portions of the swingable devices and also having aprojection disposed in said slot of the bracket, and further having its heel end opposed to the said spring strip, a rod guided in a wall of the casing and pivotally connected to the said keeper, and a spring of expansion type surrounding said rod and interposed between an abutment thereonand an inner stationary abutment; each of the said swingable devices having an upper disk and a plate in spaced and parallel relation and joined by a sleeve and each also having its pendent portion integral with its upper plate, and the projections on the pendentportions being integral with the said pendent portions.

In testimony whereof I aflix my signature.

CHARLES L. KNAPP. 

